Rear extensions in Newry Mourne Down
1,069 applications since 2020. 927 approved and 34 refused. Refused: about 1 in 28 here, about 1 in 7 across the councils we cover.
Last updated 9 November 2026.
Without planning permission
- Up to 3 m deep on a terrace or semi, 4 m on a detached house
- Up to 6 m or 8 m through the neighbour-consultation route, not on protected land
- No higher than 4 m, and eaves no higher than 3 m within 2 m of a boundary
- Together with other buildings, no more than half the garden and grounds
- Materials similar in appearance to the house
England, houses only. Flats, listed buildings, conservation areas and Article 4 directions change this. The full rules.
Year by year
| Year | Applications | Approved | Refused |
|---|---|---|---|
| 2026 | 64 | 10 | 2 |
| 2025 | 150 | 115 | 1 |
| 2024 | 144 | 133 | 1 |
| 2023 | 159 | 149 | 5 |
| 2022 | 161 | 155 | 3 |
| 2021 | 232 | 216 | 12 |
| 2020 | 159 | 149 | 10 |
Architects and agents, last 5 years
| Firm | Approved | Decided |
|---|---|---|
| Hillen Architects Limited | 39 | 39 |
| Tumilty Design | 37 | 37 |
| Gary Patterson Architects | 20 | 20 |
| Mourne Architectural Design | 17 | 17 |
| Mourne Architectutal Design | 16 | 16 |
| Cole Partnership | 13 | 13 |
| MB Architectural Design Services Ltd | 12 | 12 |
| Liam Milling Architectural Design | 9 | 9 |
| Ballintemple Design | 8 | 8 |
| Architectural Design Services NI | 7 | 7 |